How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 2/25None
Week of 2/29100.0*Chance wins title100.0*Promoted100.0*Average seed
Clyde 3 Falkirk 2 +1.9
+1.4
Montrose 1 Airdrieonians 0 -1.7
-3.6
-0.3
Dumbarton 1 Raith Rovers 0 +0.7
+0.5
+0.1
Forfar Athletic 0 East Fife 1 -0.5
-0.1
Week of 3/7100.0*Chance wins title100.0*Promoted100.0*Average seed
Airdrieonians 1 East Fife 0 +4.0
+0.6
Montrose 4 Stranraer 1 -1.9
-0.1
Points
Chance Will Win Championship